Hamiden Abd El- Wahed Khalifa, Loay Alkhalifa, Sultan S. Alodhaibi, Basma E. El- Demerdash. Optimizing of Universal DEA Model with Multi-Level Integration under Neutrosophic Environment. Neutrosophic Sets Syst. 2025;85:36-52. Accessed May 15, 2025. https://fs.unm.edu/nss8/index.php/111/article/view/6230